Home / 420,286.73-579,995.03-229,300.14

Finding the Fourth Proportional to 420,286.73, 579,995.03 and 229,300.14

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Solution

The fourth proportional to 420,286.73, 579,995.03 and 229,300.14 is: 316,433.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,286.73 : 579,995.03 = 229,300.14 : x
  2. Step 2: Convert to fraction form
    420,286.73/579,995.03 = 229,300.14/x
  3. Step 3: Cross multiply
    420,286.73x = 579,995.03 × 229,300.14
  4. Step 4: Simplify right side
    420,286.73x = 132,992,938,908.05
  5. Step 5: Solve for x
    x = 132,992,938,908.05/420,286.73
  6. Step 6: Final answer
    x = 316,433.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.